Capsule for holding compressed gas.



PATENTED OCT. 11, 1904.

S. H. GROCKER. CAPSULE FOR HOLDING COMPRESSED GAS.

APPLIGATION FILED APR. 3. 1903.

N0 MODEL.

UNITED STATES SAMUEL HY. CROCKER,

Patented October 11, 1904.

OF LONDON, ENGLAND.

CAPSULE FOR HOLDING COMPRESSED GAS- SPECIFICATION forming part of Letters Patent No. 771,813, dated October 11, 1904.

Application filed April 3, 1903.

To all whom it may concern.-

Be it known that I, SAMUEL HENRY (JRooKER, a subject of the King of Great Britain and Ireland, residing at 16 Farringdon avenue, in the county of London, England, have invented certain new and useful Improvements in and Relating to Capsules for Holding Compressed Gas, of which the following is a specification.

The object of my invention is to make an efiicient refillable aerating capsule which holds a sufficient charge of compressed gas to aerate one bottle or siphon of liquid.

The essential features of my invention are a gas-tight joint formed by means of soft metal expanded laterally by direct pressure of a punch upon its exposed face and in combination with this joint a central valve pushed back to release the gas under pressure in the capsule. The gas-tight joint around the pin or valve can be made repeatedly on the pin being inserted in position, thus allowing the capsule to be used for successive charges.

My invention is illustrated in the accompanying drawings, in which Figure 1 is a section of the upper part of the capsule with valve removed. Fig. 2shows the capsule with valve closed. and Fig. 3 a similar view with valve open. Fig. 4 is a cross-section through the valve, taken at w y, Fig. 2; and Fig. 5 shows a modification.

According to Figs. 1 to 4:, I form the bulb A of the capsule in the usual manner, and the inside of the orifice of the capsule is provided with a shoulder a, upon which I place a hardmetal disk B. Perforated in the center and upon this hard-metal disk I place another disk, C,of soft metal, similarly perforated,and both these disks fit comfortably against the inside of the orifice of the capsule, the edges of which are turned over upon the soft-metal disk to retain both disks in place. I now push through the perforated disks a small tapered pin or valve D, provided with a head (Z to prevent it entirely entering the capsule. This pin or valve is formed with a narrow neck cl underneath the head, which gradually broadens out in the manner of a cone until at or about the end of the pin. and when the pin is inserted in the capsule through the perforations in the disks the base of the conical pin is arranged Serial No. 150,960.

(No model.)

to be below the soft-metal disk. The thickest portionof the pin (below the head) will comfortably pass through the perforations in the disks, the head projecting a short distance outside the capsule. The pin may be grooved, as shown by (Z In order to make a good gastight joint between this pin or valve and the soft-metal disk, I take a tubular punch (which fits loosely over the projecting end of the pin or valve) and force it against the face of the soft-metal disk which iseXposed between the valve and the turned-over edges of the capsule.

By this means the soft metal is forcibly squeezed laterally against the valve, and a good gas tight joint is effected between the soft 5 metal and the valve, which can be easily broken by forcing down the cones or tapered valve a required distance. The same action forces the soft metal outwardly against the side of the capsule below the turned-over edge 7 and renders the joint around the edge completel y gas-tight, the turning over of the edge alone being found insufficient to always make a reliable joint, so that the punch acts to make a double gas-tight joint at one operation. The 7 5 punch and operating parts are not shown in the drawings, as their construction forms no part of this invention.

The modification shown in Fig. 5 is identical in principle with the form already de- 0 scribed, but in place of the separate disk B of hard metal supported by the shoulder a I press in the neck of the capsule at a, leaving an aperture only slightly larger than the pin D. The soft-metal disk or ring 0 rests di- 8 5 rectly upon the narrowed neck, and the joint is made both around the pin and against the side of the capsule in the manner already described.

The method of securing the disk or disks 9 by turning over the edge of the capsule and also the shoulder upon which they rest are not essential features of my invention, the object of the turnedover edge being merely to retain the disks in place.

In order to charge or recharge my improved capsule, I preferably first extract the coned pin or Valve by hand or otherwise and place it within the hollow punch, which in due course acts to close the valve. I now I connect my improved capsule to a supply of gas under pressure, and when sufficiently charged I force forward the tubular punch carrying the cone-shaped pin, which it inserts to a sufficient distance into the capsule before the end of the punch comes into operation against the soft-metal disk, a single action inserting the pin and closing the metal around it. When the charged capsule is to be used for aerating liquids, it is placed in connection with a suitable siphon or other container, and the valve is pushed back until the narrowed portion of the pin enters the perforations of the disks, when the gas escapes into the container around the pin.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a capsule for holding compressed gas, a shoulder in the neck thereof, a pin-valve tapered throughout its entire length, a perforated body of soft metal surrounding and holding the said valve intermediate of its length and forming a gas-tight joint both with the valve and capsule on the application of pressure upon its face, said valve being tapered so as to allow of its being pushed downwardly when the capsule is to be opened, the said soft-metal body being supported in the neck through the medium of said shoulder.

2. In a capsule for holding compressed gas for aerating purposes, a pinvalve, a softmetal disk through which the valve passes, and a hard-metal disk in the neck of the capsule supporting the soft-metal disk, said softmetal disk being adapted to receive pressure upon its exposed face whereby it will spread and make a gas-tight joint both with the pinvalve and with the sides of the capsule, substantially as herein described.

3. In a capsule for holding compressed gas for aerating purposes, the combination of a shoulder in the neck of the capsule, a perforated disk of hard metal on the shoulder, a perforated disk of soft metal supported on the hard disk, and a central valve-pin passing through both disks, said soft-metal disk being adapted to receive pressure upon its exposed face whereby it will spread and make a gas-tight joint both with the pin-valve and with the sides of the capsule, substantially as herein described.

4. In a capsule for holding compressed gas for aerating purposes, a tapered pin-valve D having the head (Z, the hard-metal perforated disk B fitted in the neck of the capsule, and the soft-metal perforated disk C supported by the hard disk and forming, when pressure is applied to its face, a gas-tight joint between the valve and capsule, substantially as herein described and shown.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

SAML. HY. CROOKER.

Vitnesses:

FRANK W. PATTISON, V ALTER J SKERTEN. 

